CL - the stuff I use and resell is the original formula, made by Greencare and sold to me by the Blackmore Co., who employs Bill Argo, one of the people who did the formulation work with folks at MSU. There are lots of knock-off out there, and they likely are just as good.
Concerning the "tweak" to the formula I mentioned earlier, he mentioned that it was added magnesium. Apparently, while most water supplies have adequate calcium and magnesium in them, south Florida is on a coral aquifer, so there is plenty of calcium, but no magnesium to speak of. Adding a teaspoon of Epsom Salts per gallon of fertilizer should remedy that.
Concerning Tucker's comment about not getting blooms, Bill said that while not absolute, more often than not, when folks start seeing nutritional issues, it is pH related. Tucker - which MSU formula were you using, and with what water supply?
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